Granted Patent
Utility
US 4,313,209 · App. 06/168,170
Phase-locked loop frequency synthesizer including compensated phase and frequency modulation
Inventor:
Eric R. Drucker
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Jul 14, 1980
Inventor
Eric R. Drucker
Assignee (at issue)
John Fluke Mfg. Co., Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.